Vacuum cleaner



FIG. 1 is a perspective view of a vacuum cleaner showing my new design;

FIG. 2 is an exploded perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a front elevational view thereof. 

The ornamental design of a vacuum cleaner, as shown. 